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8 inch mirror being ground.

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19 years 9 months ago #10354 by michaeloconnell
Replied by michaeloconnell on topic Re: 8 inch mirror being ground.
That's a really interesting read Dave! I'd appreciate it if you could keep us posted on how the remainder comes along.
Thanks for sharing,

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19 years 9 months ago #10357 by dave_lillis
Replied by dave_lillis on topic Re: 8 inch mirror being ground.
We're all looking forward to having a look through it at one of the starparties someday :wink:

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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19 years 9 months ago #10361 by Seanie_Morris
Replied by Seanie_Morris on topic Re: 8 inch mirror being ground.
Dave,
I think it is imperative you take photos and add them to a newly created folder in the Files section here for us to see!
Also, can you do a checklist with prices and sources of the materials you have used?

Seanie.

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

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19 years 9 months ago #10408 by Conor
Replied by Conor on topic Re: 8 inch mirror being ground.
i have always wanted to make a telescope from scratch but it takes many long hours. I hope it works out for you as the mirror can be a very long and slow process :D

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  • IFAS Astronomer of the Year 2010
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19 years 9 months ago #10472 by DaveGrennan
Replied by DaveGrennan on topic Re: 8 inch mirror being ground.

it takes many long hours. I hope it works out for you as the mirror can be a very long and slow process :D


You're not wrong there Conor!! Last night for example, I had left the mirror and polishing tool in contact with a layer of clingfilm betweem them to prevent them locking together. The idea is that this makes the pitch tool remain an exact match for the mirror. Well for some reason the clingfilm seemed to stick both of them together like glue. I ended up having to soak them both in warm water and then beat the living daylights out of the mirror with a rubber mallet to get them to separate. They did eventually separate with no damage to either but it was a right pain and a whole evening went to waste!

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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19 years 8 months ago #10760 by Conor
Replied by Conor on topic Re: 8 inch mirror being ground.
A friend of mine has just finished doing up his 16" dub, here is his story!

www.eaas.co.uk/news/dobsonian_refurb.html

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